Well I got my Hondata S100 setup up and running. My base map has me running very rich due to the fact that the base fuel pressure is lower than what my B&M can go to for some reason . Anyway I know a guy that has offered to tune my car on the street via wideband for $50 an hr. This is a very good deal IMO. Any cons to street tuning over the dyno besides the obvious lack of a power graph in terms of just getting a nice AF ratio and good part throttle smoothness?

 

I would do both. You can ditch the dyno only if the guy tuning your car has extensive experience in cam timing your Honda. And Personally built your engine.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SUNBURST &raquo;</TD></TR><TR><TD CLASS="quote">I would do both. You can ditch the dyno only if the guy tuning your car has extensive experience in cam timing your Honda. And Personally built your engine.</TD></TR></TABLE>

Cam timing will not be altered. My first post was a little off. Maybe I should put it this way. For a car that has not been tuned for WOT on the dyno, will a good street tune before hand be beneficial or would it be best to wait?

I'll probably get an hr or so just to get the car running better and to have a little more pressure running to my 450cc injectors.

 

just wait unless you have a wideband o2 with display to do a 'street tune'

edit: n/m i didnt read

do you have an extra bung on your hearder somewhere to accomidate the wideband, and preferably an abandoned airfeild to make exstensive 3rd g34r vtec romps?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SOHCArchangel &raquo;</TD></TR><TR><TD CLASS="quote">just wait unless you have a wideband o2 with display to do a 'street tune'

edit: n/m i didnt read

do you have an extra bung on your hearder somewhere to accomidate the wideband, and preferably an abandoned airfeild to make exstensive 3rd g34r vtec romps? </TD></TR></TABLE>

I've been wondering where the wideband will go. I might have to run open header or something.

 

most optimal spot is 1-1.5" from the main merge

does the hondata have the ability to read and use signals from a wideband?

 

dont want to *****/jack your thread, but i have a similar situation coming up with street tuning my NA motor with my wideband. what kind of A/F should you shoot for in a wot 3rd gear pull?

 

I like to street tune if you can drive it on the street, but dyno if you cant.

 

i basically street tuned my setup when i put my big cams in. i have a vafc. it was a nice different when i just street tuned it setting my ignition timing different a couple times and just felt where it was too rich or lacked fuel. i did this without a wideband also. it wasnt bad, but if you have a wideband, that is extremely beneficial.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by blufke &raquo;</TD></TR><TR><TD CLASS="quote">dont want to *****/jack your thread, but i have a similar situation coming up with street tuning my NA motor with my wideband. what kind of A/F should you shoot for in a wot 3rd gear pull? </TD></TR></TABLE>
you should shoot for 14.7:1 under 75% throttle (efficiency mode) then 12.5-12.7:1 to make the most power usually.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ActiveAero &raquo;</TD></TR><TR><TD CLASS="quote">due to the fact that the base fuel pressure is lower than what my B&M can go to for some reason </TD></TR></TABLE>
fuel pump supply pressure is where the FPR stops lowering the pressure...

Dyno. No question.

 

If your trying to tune partial throttle (wideband or not) the A/F ratio will still go up and down unless you floor it.

 

so is wideband tuning worth it or not? i have a wideband tuner waiting for me to tune my car soon. he said also after, he would tune it on the dyno with his equipment and that the street wideband shortens the time on the dyno cuz the a/f ratio is already close. what you guys think?

 

Very interested in the street tune vs dyno tune also.

 

 

dyno; you need to see if the graph is spiky and bumpy, where there are problems in your power prodution, etc...wideband readout is only half of the tuning equation...

not to mention, the dyno is controlled and very consistent. UNless you have a landing strip of something of that sort, it is a risk not worth taking when you have access to a dyno.

 

I had my car street tuned with a wideband with great results. I still had some pre-ignition (I have 12.5:1 comp) and felt i still needed a dyno tune after that

What I couldn't believe was the difference a good dyno tune made after that- in my case it was 180whp ---&gt; 212 whp

Street tune is enough to get you going - but a dyno tune will provide ultimate results

 

I use the FJO wideband logger software for street tuning, and it works great. You can record your AFR on the software and view the AFR vs RPM, and tune just like the dyno. Our strongest numbers in our supra were after road tuning.

One downfall to road tuning is you need a fairly safe road to do it on, because typically 3rd or 4th gear pulls are needed to get a long enough RPM map to really see what your AFR is doing.

Road tuning is great for AFR tuning, but from my experience you need an extra hour or two at a real dyno to tune cam and ignition timing...thats where the power is